Malicious PDF — malware analysis report

Static analysis result for SHA-256 4092829018d7fe0a…

MALICIOUS

PDF

46.7 KB Created: 2021-06-13 21:17:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 0964aec909052e324cc5f37ed8d0e427 SHA-1: 1b5a8eba771753f7f5a3ffba809cb13f223c3587 SHA-256: 4092829018d7fe0a398db4e6c78127f3de1ce32131ce39a3233d7d19247327d5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector infrastructure, specifically advertising 'free Robux' and game hacks. The document body and embedded URLs strongly suggest a phishing or scam attempt to lure users to malicious websites. The presence of multiple redirector links indicates a deliberate effort to distribute potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://netcdn.co/app/431946152/roblox-free-robux-codes-2021-game-hack In PDF document text
    • https://www.lubar.it/wp-content/uploads/fsqm-files/rc8-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.lubar.it/wp-content/uploads/fsqm-files/how-to-use-aimbot-hacks-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.lubar.it/wp-content/uploads/fsqm-files/free-robux-site_GM431946152.pdfIn PDF document text
    • https://www.lubar.it/wp-content/uploads/fsqm-files/robux-gratis-funciona-hack-sin-cortes-2021_GM431946152.pdfIn PDF document text
    • https://www.lubar.it/wp-content/uploads/fsqm-files/hack-to-get-money-on-roblox-rocitizens_GM431946152.pdfIn PDF document text
    • https://www.lubar.it/wp-content/uploads/fsqm-files/hackaron-roblox-hack-password_GM431946152.pdfIn PDF document text
    • https://www.lubar.it/wp-content/uploads/fsqm-files/can-you-get-free-robux-without-builders-club_GM431946152.pdfIn PDF document text
    • https://www.lubar.it/wp-content/uploads/fsqm-files/free-tiktok-fans-no-human-verification-or-downloading-apps_GM835599320.pdfIn PDF document text
    • https://www.lubar.it/wp-content/uploads/fsqm-files/free-redeem-codes-for-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.lubar.it/wp-content/uploads/fsqm-files/can-you-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://www.lubar.it/wp-content/uploads/fsqm-files/cheat-way-to-give-robux-to-friends-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.lubar.it/wp-content/uploads/fsqm-files/minecraft-life-hacks_GM479516143.pdfIn PDF document text
    • https://www.lubar.it/wp-content/uploads/fsqm-files/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.lubar.it/wp-content/uploads/fsqm-files/free-robux-not-fake_GM431946152.pdfIn PDF document text
    • https://www.lubar.it/wp-content/uploads/fsqm-files/how-to-free-robux_GM431946152.pdfIn PDF document text
    • https://www.lubar.it/wp-content/uploads/fsqm-files/high-level-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.lubar.it/wp-content/uploads/fsqm-files/hey-google-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.lubar.it/wp-content/uploads/fsqm-files/adopt-me-roblox-cheat_GM431946152.pdfIn PDF document text
    • https://www.lubar.it/wp-content/uploads/fsqm-files/hack-bloxtube-beta-roblox_GM431946152.pdfIn PDF document text
    • https://www.lubar.it/wp-content/uploads/fsqm-files/cheat-engine-roblox-tycoon-money_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004d29.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D29 29640 bytes
SHA-256: 54e20590f1d39a1bc133a2178c0ef5da70db34c1ab72ead2e7f7b7338c03d9c0
font_01_sfnt_off00009322.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9322 18664 bytes
SHA-256: d64c6947ac0265de63370a804210bfd5d7b8fb860a7b40d50aae0f2fc46bc98a

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